342509149 has 4 divisors (see below), whose sum is σ = 362656764. Its totient is φ = 322361536.

The previous prime is 342509119. The next prime is 342509191. The reversal of 342509149 is 941905243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 266505625 + 76003524 = 16325^2 + 8718^2 .

It is a cyclic number.

It is not a de Polignac number, because 342509149 - 2⁷ = 342509021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342509119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10073782 + ... + 10073815.

It is an arithmetic number, because the mean of its divisors is an integer number (90664191).

Almost surely, 2^342509149 is an apocalyptic number.

It is an amenable number.

342509149 is a deficient number, since it is larger than the sum of its proper divisors (20147615).

342509149 is a wasteful number, since it uses less digits than its factorization.

342509149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20147614.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 342509149 is about 18507.0027016802. The cubic root of 342509149 is about 699.6659283464.

The spelling of 342509149 in words is "three hundred forty-two million, five hundred nine thousand, one hundred forty-nine".